将翻译内容写在横线上：
they — _________________________
people — _______________________
例句学习：
They are people.
他们是人类。
They are young and old.
他们有的年轻有的年老。
They are young and old people.
他们是年轻人和老人。
They are men, women and children.
他们是男人、女人和孩子。
